Heart valve

Claim 2

Heart valve comprising: a. orifice ring; b. opposing pairs of symmetrically spaced pivots extending inwardly from a lower portion of said orifice ring; c. opposing pair of symmetrically spaced inwardly extending leaflet retaining bosses positioned on upper portions of each end of said orifice ring; d. pair of opposing symmetrically spaced closure protrusions extending inwardly from a mid por- .tion of said orifice ring, and; e. two biconical occluding leaflets for rotational movement about each pair of said pivots, edges of each of said leaflets for movement within said leaflet retaining bosses, and each of said leaflets rest against each of said closure protrusions in a closed occluding position.

Claim 3

Heart valve of claim 1 wherein each of said pivots includes a substantially flat surface at an angle with respect to the plane of said orifice ring.

Claim 4

Heart valve of claim 1 wherein each of said outwardly extending leaflet retaining bosses includes symmetrically opposing rotational guides, small stop surfaces, and large stop surfaces.

Claim 5

Heart valve of claim 1 wherein each of said leaflet retaining bosses includes a center leaflet retaining boss center member.

Claim 6

Heart valve comprising: a. orifice ring; b. opposing pairs of symmetrically spaced pivots extending inwardly from a lower portion of said orifice ring, each of said pivots including a substantially flat portion at an angle with respect to a horizontal plane of said orifice ring; c. opposing pairs of symmetrically spaced inwardly extending leaflet retainer bosses positioned on upper portions of each end of said orifice ring, each of said leaflet retaining bosses including opposing rotational guides, small stop surfaces and large stop surfaces, separated by a center leaflet retaining boss center member; d. pair of opposing symmetrically spaced closure protrusions extending inwardly from a mid portion of said orifice ring, and; e. two biconical occluding leaflets for rotational movement about each pair of said pivots, edges of each of said leaflets for movement within said leaflet retaining bosses, and said leaflets resting against said closure protrusions in a closed occluding position.

Claim 7

Heart valve comprising: a. orifice ring; b. opposing pairs of symmetrically spaced pivots extending inwardly from a lower portion of said orifice ring, each of said pivots including a substantially flat portion at an angle with respect to a horizontal plane of said orifice ring; c. opposing pairs of symmetrically spaced inwardly extending leaflet retainer bosses positioned on upper portions of each end of said orifice ring, each of said leaflet retaining bosses including opposing rotational guides, small stop surfaces and large stop surfaces, separated by a center leaflet retaining boss center member; d. pair of opposing symmetrically spaced closure protrusions extending inwardly from a mid portion of said orifice ring, and; e. two biconical occluding leaflets for rotational movement about each pair of said pivots, edges of each of said leaflets for movement within said leaflet retaining bosses, and said leaflets resting against said closure protrusions in a closed occluding position.

Claim 8

Heart valve comprising: a. orifice ring; b . opposing pairs of symmetrically spaced pivots extending inwardly from a lower portion of said orifice ring; c. opposing pairs of symmetrically spaced inwardly extending leaflet retainer protrusions from a mid portion of said orifice ring; d. opposing pairs of symmetrically spaced outwardly extending leaflet stops from an upper portion of said orifice ring; e. opposing pairs of symmetrically spaced closure protrusions extending outwardly from a mid portion of said interior of said orifice ring, and; f. two biconical occluding leaflets for rotational movement around said pivots, each of said leaflets including pivot slots for accepting said pivots, said leaflets also pivoting about said leaflet retainer protrusions and between said closure protrusions in a closed occluding position and to said leaflet stop in an non-occluding open position.

Claim 9

Heart valve comprising: a. orifice ring; b . opposing pairs of symmetrically spaced pivots extending inwardly from a lower portion of said orifice ring; c. opposing pairs of symmetrically spaced inwardly extending leaflet retainer protrusions from a mid portion of said orifice ring; d. opposing pairs of symmetrically spaced outwardly extending leaflet stops from an upper portion of said orifice ring; e. opposing pairs of symmetrically spaced closure protrusions extending outwardly from a mid portion of said interior of said orifice ring, and; f. two biconical occluding leaflets for rotational movement around said pivots, each of said leaflets including pivot slots for accepting said pivots, said leaflets also pivoting about said leaflet retainer protrusions and between said closure protrusions in a closed occluding position and to said leaflet stop in an non-occluding open position.

Claim 10

Heart valve of claim 6 wherein each of said leaflet retainer protrusions are elongated.

Claim 11

Heart valve of claim 6 wherein said leaflet retainer protrusions are a conical like geometrical cross-section.

Claim 12

Heart valve of claim 6 wherein each of said leaflet stops are elongated.

Claim 13

Heart valve comprising: a. orifice ring: b. opposing pairs of symmetrically spaced pivots extending inwardly from a lower portion of said orifice ring; c. opposing pairs of symmetrically spaced inwardly extending elongated leaflet retainer protrusions from a mid portion of said orifice ring; d. opposing pairs of symmetrically spaced outwardly extending elongated leaflet stops from an upper portion of said orifice ring; e. opposing pairs of symmetrically spaced closure protrusions extending outwardly from a mid portion of said interior of said orifice ring, and; f. two biconical occluding leaflets for rotational movement around said pivots, each of said leaflets including pivot slots for accepting said pivots, said leaflets also pivoting about said leaflet retainer protrusions and between said closure protrusions in a closed occluding position and to said leaflet stop in an non-occluding open position.

Claim 14

Heart valve comprising: a. orifice ring: b. opposing pairs of symmetrically spaced pivots extending inwardly from a lower portion of said orifice ring; c. opposing pairs of symmetrically spaced inwardly extending elongated leaflet retainer protrusions from a mid portion of said orifice ring; d. opposing pairs of symmetrically spaced outwardly extending elongated leaflet stops from an upper portion of said orifice ring; e. opposing pairs of symmetrically spaced closure protrusions extending outwardly from a mid portion of said interior of said orifice ring, and; f. two biconical occluding leaflets for rotational movement around said pivots, each of said leaflets including pivot slots for accepting said pivots, said leaflets also pivoting about said leaflet retainer protrusions and between said closure protrusions in a closed occluding position and to said leaflet stop in an non-occluding open position.